btrfs: convert btrfs_get_extent() to take a folio

We only pass this into read_inline_extent, change it to take a folio and
update the callers.
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

fs/btrfs/btrfs_inode.h

@@ -578,7 +578,7 @@ struct inode *btrfs_iget_path(u64 ino, struct btrfs_root *root,
 			      struct btrfs_path *path);
 struct inode *btrfs_iget(u64 ino, struct btrfs_root *root);
 struct extent_map *btrfs_get_extent(struct btrfs_inode *inode,
-				    struct page *page, u64 start, u64 len);
+				    struct folio *folio, u64 start, u64 len);
 int btrfs_update_inode(struct btrfs_trans_handle *trans,
 		       struct btrfs_inode *inode);
 int btrfs_update_inode_fallback(struct btrfs_trans_handle *trans,

fs/btrfs/extent_io.c

@@ -987,7 +987,7 @@ static struct extent_map *__get_extent_map(struct inode *inode, struct page *pag
 		*em_cached = NULL;
 	}
 
-	em = btrfs_get_extent(BTRFS_I(inode), page, start, len);
+	em = btrfs_get_extent(BTRFS_I(inode), page_folio(page), start, len);
 	if (!IS_ERR(em)) {
 		BUG_ON(*em_cached);
 		refcount_inc(&em->refs);

fs/btrfs/inode.c

@@ -6792,7 +6792,7 @@ static int read_inline_extent(struct btrfs_inode *inode, struct btrfs_path *path
  * Return: ERR_PTR on error, non-NULL extent_map on success.
  */
 struct extent_map *btrfs_get_extent(struct btrfs_inode *inode,
-				    struct page *page, u64 start, u64 len)
+				    struct folio *folio, u64 start, u64 len)
 {
 	struct btrfs_fs_info *fs_info = inode->root->fs_info;
 	int ret = 0;
@@ -6815,7 +6815,7 @@ struct extent_map *btrfs_get_extent(struct btrfs_inode *inode,
 	if (em) {
 		if (em->start > start || em->start + em->len <= start)
 			free_extent_map(em);
-		else if (em->disk_bytenr == EXTENT_MAP_INLINE && page)
+		else if (em->disk_bytenr == EXTENT_MAP_INLINE && folio)
 			free_extent_map(em);
 		else
 			goto out;
@@ -6945,7 +6945,7 @@ struct extent_map *btrfs_get_extent(struct btrfs_inode *inode,
 		ASSERT(em->disk_bytenr == EXTENT_MAP_INLINE);
 		ASSERT(em->len == fs_info->sectorsize);
 
-		ret = read_inline_extent(inode, path, page_folio(page));
+		ret = read_inline_extent(inode, path, folio);
 		if (ret < 0)
 			goto out;
 		goto insert;